Hide heap methods where possible.

test/cctest/test-alloc.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 19 matching lines @@
 
 #include "cctest.h"
 
 
 using namespace v8::internal;
 
 
 static MaybeObject* AllocateAfterFailures() {
   static int attempts = 0;
   if (++attempts < 3) return Failure::RetryAfterGC();
-  Heap* heap = CcTest::heap();
+  TestHeap* heap = CcTest::test_heap();
 
   // New space.
   SimulateFullSpace(heap->new_space());
   CHECK(!heap->AllocateByteArray(100)->IsFailure());
   CHECK(!heap->AllocateFixedArray(100, NOT_TENURED)->IsFailure());
 
   // Make sure we can allocate through optimized allocation functions
   // for specific kinds.
   CHECK(!heap->AllocateFixedArray(100)->IsFailure());
   CHECK(!heap->AllocateHeapNumber(0.42)->IsFailure());
@@ skipping 165 matching lines @@
       if (index < blocks.length() - 1) {
         blocks[index] = blocks.RemoveLast();
       } else {
         blocks.RemoveLast();
       }
     }
   }
 
   code_range.TearDown();
 }